Waterproof covering roofs, etc.



April 9, 1940. Q R CKERT Y 2,196,807

` WATERPROOF COVERING ROOFS, 'ETC Filed July 9, 1958 M; ff. MQ INVENTORf ATTORNEY.

Patented Apr. 9, 1940 UNITED sTATEs PATENT ori-*ICE Clarence R. Eckert,Englewood, N. J., assignor to Metropolitan Roofing Supplies Co., Inc.,New York, N. Y., a corporation of New York Application July 9, 193s,serial No. 218,261

2 Claims.

This invention relates to a covering that is particularly useful for aflat roof or deck,- but it is not limited to such uses as it is alsosuitable for floors, playgrounds, tennis'courts, roadways, and the like.

It is well known that lattice work, wood slats, tile or blocks areplaced for example on flat roofs and other places to provide surfacesthat can be walked or traveled upon without injuring the underlyingwatertight layer or subsurface. In such cases whenV tile or blocks areused they are often cemented to the top side of the underlyingwatertight layer or surface by means of asphalt or tar or otherwaterproof cementitious material. The tile or blocks are usually laidwith their edges close together but having small cracks in which watermay collect and freeze causing upheaval or detachment of the tile orblocks from the undersurface and leaving them or at least some of themloose thereon. Besides, even in warm Weather the Weight of one steppingon a loosened tile or block under which water has collected sometimescauses geysers of water to spout out.

By the present invention the troubles or didiculties mentioned aboveaswell as other objections are overcome and, in addition, the danger ofwater passing through a roof deck or -other surface to which theinvention is applied is greatly reduced. At the same time the life ofthe same is prolonged. Also, this invention provides a somewhatresilient area that is not slippery and is safe for pedestrians andvehicles.

In carrying out this invention waterproof tile or blocks that can bewalked or traveled over are laid upon a roof deck, oor, or other surfacewith their edges near each other. Their edges are so shaped that sealingstrips can be installed at the joints in such a manner as to provide asubstantially smooth upper surface and prevent access of water betweenthe edges of the tile or blocks and between these tile or blocks and thesurface upon which they are laid.

The invention will be understood from the description in connection withthe accompanying drawing in which Fig. 1 is a plan view partly brokenaway and with parts removed showing an illustrative embodiment of myinvention; Fig. 2 is a plan view of one of the tile or blocks; Fig. 3 isa section along the line 3-3 of Fig. 2; Fig. 4 is an exploded edge viewof Fig. 1; and Fig. 5 is an end view of a modification of the tile orblock shown in Figs. 2 and 3.

In the drawing, reference character I (Fig. 4) represents a roof deck,road way, or the like to which this invention is applied or by which itis covered. The portion I may be made waterproof initially in any of theWell known ways so that water cannot penetrate it.

-The portion I is covered with waterproof tile f or blocks 2 preferablyof rectangular shape hav- 5 ing grooves 3 around their edges along theirupper surfaces, with the edges 4 of adjacent blocks preferably incontact with each other. 'I'hese blocks or tile 2 may be made of anymaterial that is resilient and wear resisting and can be made Water- 10proof. For example, these blocks or tile 2 can be made of wood and canbe waterproofed either before or after they are cut out or formed, orthey can be made of manufactured fibrous material such as Celotex andsaturated with water- 15 proof liquid or plastic material such as tar orasphalt. They may be nailed in place by nails near the corners, thesenails being long enough to extend into but not through the portion I.

The blocks 2 do not have to be made in one 20 piece with grooves 3 alongthe edges, but can be easily constructed of two pieces 2' and 2" ofdilerent sizes with the smaller one on top thus leaving the groove 3around the edges so indicated. 25

The top surface of the portion I is preferably covered with a coating 5of Waterproofing material before the tile or blocks 2 are laid. As theyare pressed down a part of the cbating material 5 is pressed upwardbetween the joints 4 as indicated at 6. A layer `l of liquid or plasticwater-y proof material is applied to the grooves 3 after the tile 2 havebeen put in place and pressed down, and a series of long strips ofwaterproof saturated felt or the like is laid in the grooves 35 3covering the joints 4 and rendering them more safe from the penetrationof water. These strips 8 are preferably laid in the direction of theslope or drainage of the portion I. Short cross strips 4o 9 of the samesort are laid in the grooves 3 at right angles to the strips 8.

After the strips 8 and 9 have been put in the grooves 3 waterproofcementitious material I0 as shown at the right hand portion of Fig. 4 is4 poured on top of these strips, and then long strips III, which may bemade of the same sort of material as the blocks 2 and aremade waterprooffor example by impregnating them with tar or asphalt or otherwaterproong material, are laid on the strips 8 and pressed down. Shortstrips I2- of the same sort are installed in the cross grooves 3 in thesame manner with their ends against the edges of the strips II. Thestrips II and I2. are of such width and thickness that they .55

fit in the grooves I and their upper surfaces are flush with the uppersurfaces of the blocks 2.

In the modification shown in Fig. the blocks I3 which are made of thesame sort of material as the blocks 2 have the grooves I4 so made thatthe bottom sides thereof slope away from the edges 4 so that any waterthat might gain access to these grooves would tend to move away from theedges where cracks might be present, thus decreasing the chances forleakage.

If desired, the portions of the blocks 2 or 2' that lie below thebottoms of the grooves 3 or 3' can be trimmed off where they would comealong the edges of the surfaces that are to be covered so that the Wholethickness of these blocks would be present at these edges.

What is claimed is:

1. A covering for waterproof surfaces, comprising a series of blocks ofresilient waterproof material with grooves of substantial depthextending entirely around said blocks about their upper surfaces attheir edges and with the edges of successive blocks adjacent each other,strips of flexible waterproof sheet material within said grooves andcovering the joints between said edges of said blocks, and fillers ofthe same material as said blocks in said grooves on said strips withtheir upper surfaces substantially flush with the upper surfaces of saidblocks.

2. A covering for waterproof surfaces, comprising a seriesof blocks ofresilient waterproof material each made in two pieces of substantialvthickness'one larger than the other and assembled'so that the largerpiece projects beyond the smaller on all edges to form grooves ofsubstantial depth extending entirely around said blocks about theirupper surfaces at their edges and with the edges of successive blocksadjacent each other, strips of iiexible waterproof sheet material withinsaid grooves and covering the joints between said edges of said blocks,and fillers of the same material as said blocks in said grooves on saidstrips with their upper surfaces substantially flush with 20 the uppersurfaces of said blocks.

CLARENCE n. ECKERT.

